Chinese APT Groups Continue to Pound Away on Pulse ...
In many instances, the attackers took advantage of an authentication bypass vulnerability in the Pulse Connect Secure (PCS) appliance (CVE-2021-22893) and a combination of previously known vulnerabilities to gain initial access on a victim network. The authentication bypass flaw was discovered and patched last month — but only after attackers had begun exploiting it in the wild. However, Mandiant researchers were often unable to determine an initial access vector because the threat actors deleted or altered forensic evidence or the Pulse Secure appliance itself had gone through software upd...